[CI] Prune redundant CPU test overhead (#34309)

Co-authored-by: hnyls2002 <lsyincs@gmail.com>

.github/workflows/lint.yml

@@ -50,6 +50,12 @@ jobs:
       - name: Run pre-commit checks
         run: SKIP=no-commit-to-branch pre-commit run --all-files --show-diff-on-failure
 
+      # Not in the rust-ext build job: its cache key covers the built .so files,
+      # and a test script is not a build input. Tests take ~1s; the timeout is
+      # for a cold cache, which codegens the dependency graph first.
+      - name: Run rust/ workspace tests
+        run: cd rust && timeout 900 cargo test --workspace
+
       - name: Run lychee docs checks (offline references)
         uses: lycheeverse/lychee-action@8646ba30535128ac92d33dfc9133794bfdd9b411 # v2
         with: